/Engine/Source/Developer/MeshUtilities/Public/MeshUtilities.h
Convert a set of mesh components in their current pose to a static mesh.
a new static mesh (specified by the user)
[UStaticMesh](API\Runtime\Engine\Engine\UStaticMesh) * ConvertMeshesToStaticMesh ( const [TArray](API\Runtime\Core\Containers\TArray)< [UMeshComponent](API\Runtime\Engine\Components\UMeshComponent) * > & InMeshComponents, const FTransform & InRootTransform, const [FString](API\Runtime\Core\Containers\FString) & InPackageName )